Electric tractor



FIG. 1 is a perspective view of an electric tractor showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the electric tractor and form no part of the claimed design. 

CLAIM The ornamental design for an electric tractor, as shown and described. 